Franklin Magic Square
Benjamin Franklin constructed the above 
Panmagic Square having Magic Constant 260. Any half-row or half-columnin this square totals 130, and the four corners plus the middle total 260. In addition, bent diagonals (such as 52-3-5-54-10-57-63-16)also total 260 (Madachy 1979, p. 87).
References
Madachy, J. S. ``Magic and Antimagic Squares.'' Ch. 4 in Madachy's Mathematical Recreations. New York: Dover, pp. 103-113, 1979. Pappas, T. ``The Magic Square of Benjamin Franklin.'' The Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, p. 97, 1989.
- Augend
- Augmented Amicable Pair
- Augmented Dodecahedron
- Augmented Hexagonal Prism
- Augmented Pentagonal Prism
- Augmented Polyhedron
- Augmented Sphenocorona
- Augmented Triangular Prism
- Augmented Tridiminished Icosahedron
- Augmented Truncated Cube
- Augmented Truncated Dodecahedron
- Augmented Truncated Tetrahedron
- Aureum Theorema
- Aurifeuillean Factorization
- Ausdehnungslehre
- Authalic Latitude
- Autocorrelation
- Automorphic Function
- Automorphic Number
- Automorphism
- Automorphism Group
- Autonomous
- Autoregressive Model
- Auxiliary Circle
- Auxiliary Latitude